Called whenever a players shield is disabled. This is mainly caused by
attacking players or monsters that carry axes.
The event, while similar to the PlayerItemCooldownEvent, offers other
behaviour and can hence not be implemented as a childtype of said event.
Specifically, cancelling the event prevents the game events from being
sent to the player.
Plugins listening to just the PlayerItemCooldownEvent may not want said
sideeffects, meaning the disable event cannot share a handlerlist with
the cooldown event.
Adds Registry#getKey(Object) which should be the
primary way people get the key for an object. Registry
items need to exist without having a key and so
getKey() methods on Keyed objects that have a registry
are marked as Deprecated or Obsolete.
By removing this check we avoid unnecessarily allocating useless `ItemMeta` objects if we are comparing two items, or one of the two items, that don't have any durability. Don't worry, the durability of the item is checked when it checks if both item metas are equal.
This is a leftover from when checking for the item's durability was "free" because the durability was stored in the `ItemStack` itself, this [was changed in Minecraft 1.13](f8b2086d60 (src)/main/java/org/bukkit/inventory/ItemStack.java).
This adds an alternative to OfflinePlayer#isOnline that returns true only if the same instance of the player is still online. This is generally more useful than isOnline as it allows you to determine if you have an instance of a Player that still exists. If a player relogs an old Player instance becomes unlinked leading to e.g. messages sent to the old player no longer arriving despite isOnline returning true. Checking against isConnected is more useful there to discard invalid instances.
